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34

Aramides cajauea, I.  

July 15, 1960
Barro Colorado     

Little or nothing more in the way of changes in behavior yet. I tried the usual experiments with a couple of the birds today, around 10:15 a.m.

WB. Gave a couple of chips when handled.

Then started PP immediately upon being isolated in a box. Then started LC notes after a few seconds. Then shut up and started to jump. One uttered a loud chirp, and performed 1 Tsh Movement, just after it fell back particularly painfully after a jump.

Then I started to talk to it.  Its first response was to utter 2 or 3 moderately rapid series of short soft peeps (about 3 or 4 notes to a series). These appeared to by eventually the same as the "low intensity RP" of WH & U described above on July 12th. They probably were RP - but this seems to be the only form of RP performed by any of the birds now. They seem to have lost the more rapid RP. I shall call this slower form RP2 from now on. The first series of RP2 notes were each accompanied by several Tsh's, (each Tsh being synchronized with 1 TW, in most cases). One Tsh developed into a complete general shake.

As I continued to utter "Hello"s, the response of the bird diminished in apparent intensity. It just gave 1 Tsh & 1 TW each time I said "Hello" - and sometimes uttered 1 short soft peep as well (in which case the peep, Tsh, and TW were all absolutely synchronous.)

Then we put the bird out on the floor of the animal house. It stood silently for a minute or so. Did several Tsh's and 1 general shake. Then continues to stand silently, performing many ck Movements in rapid succession.